# get all faces which lie on the cylindrical face \a sub_face1
filter = smesh.GetFilter(SMESH.FACE, SMESH.FT_BelongToCylinder, sub_face1)
ids = mesh.GetIdsFromFilter(filter)
# get all faces which lie on the cylindrical face \a sub_face1
filter = smesh.GetFilter(SMESH.FACE, SMESH.FT_BelongToCylinder, sub_face1)
ids = mesh.GetIdsFromFilter(filter)